pulse air hoses ( chop em or plug em?)

[red89yj]

The 2 conduit pipe looking things that come up from the cat and into the engine compartment on the 258 yj's... right now i just have some hose connecting the 2 of them so they are plugged to eachother, but im curious about what the effects will be if i chop them off all together, or atleast leave them open.

im trying to get my jeep back to the days where i could do burnouts or chirp the tires (not that i want to do that stuff regularly, but its just running like its been neutered)

it runs great now and everything and i think the idle mixture is right too, but it just needs the balls that it once had before the carb swap.

[LeadFoot]

I run the weber with no emission **** on it. At first I took off those useless things and welded the pipe shut on the end of the cat side so there wouldnt be a hole. Eventually, i got tired of the cat so I just took it off and now running the stock muffler with a shorty exhaust. Here's a nice shot of the whole exhaust system.....not much to it. I've since added a 90 exhaust end so the exhaust ends perfectly in front of the rear spring hanger.

http://img.photobucket.com/albums/v155/leadfoot/Imag0006.jpg

[red89yj]

is my performance suffering by having them plugged up? will i see any gains by getting rid of them?

[LeadFoot]

I hardly noticed a difference, but with just the muffler, it does sound about 100x better.

[tookielee]

Quote: im trying to get my jeep back to the days where i could do burnouts or chirp the tires (not that i want to do that stuff regularly, but its just running like its been neutered)


Was that before the 31" tires? It's not going to have the takeoff it had with stock tires.
Other than that, check your timing, has a big impact on power

[red89yj]

i was able to chirp and burn with the 31s no problem. dry pavement was super easy also. im waiting to get a hold of the timing light from my friend, so ill look into that.